Five dead in suicide car bombing

Three troops, pregnant woman and driver killed

DOHA, Qatar (CNN) --A car bomb attack at a coalition checkpoint in western Iraq killed at least five people -- including three coalition troops -- U.S. Central Command said on Friday.

Two other coalition troops were injured in the Thursday night attack, the Central Command in Doha, Qatar, said.

A woman, who appeared to be pregnant, got out of the car and began "screaming in fear" at the checkpoint, about 11 miles (18 km) southwest of the Hadithah Dam in Iraq, a Central Command statement said.